96 lines
4.1 KiB
JavaScript
96 lines
4.1 KiB
JavaScript
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/**
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* Cookie plugin
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*
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* Copyright (c) 2006 Klaus Hartl (stilbuero.de)
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*
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*/
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/**
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* Create a cookie with the given name and value and other optional parameters.
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*
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* @example $.cookie('the_cookie', 'the_value');
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* @desc Set the value of a cookie.
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* @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
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* @desc Create a cookie with all available options.
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* @example $.cookie('the_cookie', 'the_value');
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* @desc Create a session cookie.
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* @example $.cookie('the_cookie', null);
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* @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
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* used when the cookie was set.
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*
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* @param String name The name of the cookie.
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* @param String value The value of the cookie.
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* @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
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* @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
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* If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
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* If set to null or omitted, the cookie will be a session cookie and will not be retained
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* when the the browser exits.
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* @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
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* @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
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* @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
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* require a secure protocol (like HTTPS).
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* @type undefined
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*
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* @name $.cookie
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* @cat Plugins/Cookie
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* @author Klaus Hartl/klaus.hartl@stilbuero.de
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*/
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/**
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* Get the value of a cookie with the given name.
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*
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* @example $.cookie('the_cookie');
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* @desc Get the value of a cookie.
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*
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* @param String name The name of the cookie.
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* @return The value of the cookie.
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* @type String
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*
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* @name $.cookie
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* @cat Plugins/Cookie
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* @author Klaus Hartl/klaus.hartl@stilbuero.de
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*/
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jQuery.cookie = function(name, value, options) {
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if (typeof value != 'undefined') { // name and value given, set cookie
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options = options || {};
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if (value === null) {
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value = '';
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options.expires = -1;
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}
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var expires = '';
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if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
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var date;
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if (typeof options.expires == 'number') {
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date = new Date();
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date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
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} else {
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date = options.expires;
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}
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expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
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}
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// CAUTION: Needed to parenthesize options.path and options.domain
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// in the following expressions, otherwise they evaluate to undefined
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// in the packed version for some reason...
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var path = options.path ? '; path=' + (options.path) : '';
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var domain = options.domain ? '; domain=' + (options.domain) : '';
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var secure = options.secure ? '; secure' : '';
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document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
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} else { // only name given, get cookie
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var cookieValue = null;
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if (document.cookie && document.cookie != '') {
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var cookies = document.cookie.split(';');
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for (var i = 0; i < cookies.length; i++) {
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var cookie = jQuery.trim(cookies[i]);
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// Does this cookie string begin with the name we want?
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if (cookie.substring(0, name.length + 1) == (name + '=')) {
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cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
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break;
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}
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}
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}
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return cookieValue;
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}
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};
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